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LS short box · 01-17-2021, 06:02 PM

Does the CE light still come on? I so what code is shown?
I know this is a bit out there but on one of my LS swaps the 12 volt constant connection at the fuse block was bad. Mine did a similar thing as yours. On cold start it was fine. Then if I shut it off for a short time it would stumble and not not idle correctly for 20-30 seconds. Finally the connection failed and left me on the side of the road. Found the problem by smelling the melted plastic in the fuse block.

01-17-2021, 06:02 PM	#3
LS short box Registered User Join Date: Jun 2015 Location: Carlos MN Posts: 1,925	Re: Issue with idle after tune Does the CE light still come on? I so what code is shown? I know this is a bit out there but on one of my LS swaps the 12 volt constant connection at the fuse block was bad. Mine did a similar thing as yours. On cold start it was fine. Then if I shut it off for a short time it would stumble and not not idle correctly for 20-30 seconds. Finally the connection failed and left me on the side of the road. Found the problem by smelling the melted plastic in the fuse block.